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首页> 外文期刊>Physical review, D >Implications of supernova remnant origin model of galactic cosmic rays on gamma rays from young supernova remnants
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Implications of supernova remnant origin model of galactic cosmic rays on gamma rays from young supernova remnants

机译：超新星粘土射出原点模型对幼苗残余伽玛光线伽马射线的影响

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摘要

It is widely believed that Galactic cosmic rays are originated in supernova remnants (SNRs), where they are accelerated by a diffusive shock acceleration (DSA) process in supernova blast waves driven by expanding SNRs. In recent theoretical developments of the DSA theory in SNRs, protons are expected to accelerate in SNRs at least up to the knee energy. If SNRs are the true generators of cosmic rays, they should accelerate not only protons but also heavier nuclei with the right proportions, and the maximum energy of the heavier nuclei should be the atomic number (Z) times the mass of the proton. In this work, we investigate the implications of the acceleration of heavier nuclei in SNRs on energetic gamma rays produced in the hadronic interaction of cosmic rays with ambient matter. Our findings suggest that the energy conversion efficiency has to be nearly double for the mixed cosmic ray composition compared to that of pure protons to explain observations. In addition, the gamma-ray flux above a few tens of TeV would be significantly higher if cosmic ray particles could attain energies Z times the knee energy in lieu of 200 TeV, as suggested earlier for nonamplified magnetic fields. The two stated maximum energy paradigms will be discriminated in the future by upcoming gamma-ray experiments like the Cherenkov telescope array (CTA).
机译：众所周知，银河系宇宙射线源于超新星残余（SNR），其中通过扩张SNR驱动的超新加坡爆发波中的扩散冲击加速度（DSA）过程加速。在近期DSA理论的SNR中的理论发展中，预计质子将在至少达到膝盖能量时加速SNR。如果SNR是宇宙射线的真正发电机，它们不仅应该加速质子，而且还加速较重的核，并且较重核的最大能量应该是质子质量的原子数（Z）倍。在这项工作中，我们研究了较重核在宇宙射线与环境物质的富集相互作用中产生的活性伽玛光线上的较重核加速度的影响。我们的研究结果表明，与纯质子的混合宇宙射线成分相比，能量转换效率几乎是分为两倍的双倍，以解释观察。此外，如果宇宙射线颗粒可以达到200 TEV的膝关节能量，则在几十个Tev上方的伽马射线通量将显着更高，因为对于未涂布的磁场，提出了200 TEV的膝关节能量。将来将在未来歧视两个所说的两个最大能量范式，即将到达Cherenkov望远镜阵列（CTA）等伽马射线实验。

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